1J79/ Permalloy tube/ E11c tube 79HM alloy
Classification: precision soft magnetic alloy
Supplement: Alloy with high permeability in weak fields at saturation
induction 0.65-0.75 T. Alloy 1J79/ permally high squareness of the
hysteresis loop and a low coefficient of magnetization reversal
Application: For small cores of transformers, chokes and relays operating in
weak fields, magnetic shields. In the small thickness (0.05 ± 0.02
mm) - cores for pulse transformers, magnetic amplifiers and solid
state relays
Chemical Composition,%:
Ni
78.5 - 80% |
Fe
13.73 - 16.8% |
C
0.03% |
Si
0.3 - 0.5% |
Mn
0.6 - 1.1% |
S
o 0.02% |
P
0.02% |
Mo
3.8 - 4.1% |
Ti
0.15% |
Al
0.15% |
Cu
0.2% | |
Basic physical constants and mechanical properties of the alloy:
Density: γ = 8,6 g / cm3;
Electric resistivity: ρ = 0,55 ohm mm2 ? / m;
The temperature of the Curie point: Θs = 430 ° C;
Saturation magnetostriction: λS = 2 ? 106;
Brinell hardness of 210/120 HB;
Ultimate: RM = 1030/490 MPa;
Yield strength: σ0,2 = 980 145 MPa;
Modulus of elasticity E = 210 kN / mm2;
Elongation: δ5 = 3/50%;
Relative compression: φ = -%.
Heat treatment of the alloy
| Annealing | Temperature and heating rate | Holding time, h | Cooling mode | | Vacuum with a residual pressure not higher than 10-3 Torr. Art. or
pure hydrogen with a dew point of not higher than minus 40 ° C. | (1125 ± 25) ° C not higher than 500 ° C / h | 3-6 | to 600 ° C at a rate not exceeding 200 ° C / h from 600 to 200 ° C
at a rate of at least 400 ° C / h |
The magnetic properties of the alloy| Type | Class | Thickness or diameter, mm | Initial permeability | Max. permittivity | Coercive force | Technical saturation induction | | mH / m | G / E | mH / m | G / E | A/m | E | (10-4 G) | | no less | no more | no less |
cold-rolled strips |
1 | 0,005 | 8,8 | 7000 | 38 | 30000 | 8,0 | 0,10 | 0,75 | | 0,01 | 17,5 | 14000 | 75 | 60000 | 5,6 | 0,07 | | 0,02 | 20 | 16000 | 88 | 70000 | 4,0 | 0,05 | 0,05
0,08 | 20 | 16000 | 110 | 90000 | 3,2 | 0,04 | | | 0,10
0,15 | 25 | 20000 | 150 | 120000 | 2,4 | 0,03 | | Cold rolled sheets and strips | 0,20
0,25 | 28 | 22000 | 160 | 130000 | 1,6 | 0,02 | 0,35
0,50
0,8
1,0 | 31 | 25000 | 190 | 150000 | 1,6 | 0,02 | 1,5
2,0
2,5 | 28 | 22000 | 160 | 130000 | 1,6 | 0,02 | cold drawn wire
hot rolled sheets | 0,05
0,10 | 6,3 | 5000 | 50 | 40000 | 6,4 | 0,08 | | 3-22 | 25 | 20000 | 100 | 80000 | 3,2 | 0,04 | | Bar | 8-100 | 25 | 20000 | 100 | 80000 | 3,2 | 0,04 | | cold-rolled strips | 2 | 0,005 | 12,5 | 10000 | 44 | 35000 | 6,4 | 0,08 | 0,73 | | 0,01 | 20 | 16000 | 110 | 90000 | 3,2 | 0,04 | | 0,02 | 25 | 20000 | 125 | 100000 | 2,4 | 0,03 | 0,05
0,08 | 25 | 20000 | 150 | 120000 | 1,6 | 0,02 | 0,10
0,15 | 28 | 22000 | 190 | 150000 | 1,2 | 0,015 | 0,20
0,25 | 31 | 25000 | 230 | 18000 | 1,2 | 0,015 | 0,35
0,5
0,8
1,0 |
38 |
30000 |
280 |
220000 |
1,0 |
0,012 | | 1,5; 2,0 | 31 | 25000 | 230 | 180000 | 1,2 | 0,015 | | cold-rolled strips | 3 | 0,01 | 25 | 20000 | 150 | 12000 | 2,4 | 0,03 | 0,73 | | 0,02 | 31 | 25000 | 190 | 150000 | 1,6 | 0,02 | | 0,05 | 38 | 30000 | 250 | 200000 | 1,2 | 0,015 | | 0,10 | 38 | 30000 | 250 | 200000 | 1,2 | 0,015 | 0,20
0,25 | 38 | 30000 | 280 | 220000 | 1,0 | 0,012 | | 0,35 | 44 | 35000 | 310 | 250000 | 1,0 | 0,012 |
Alloy 1J79/ permalloy strip, you can order from us in the best
conditions.
If you are interested in our products, please contact with me
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